Keywords in Java

7 , the following is not a Java keyword with "C".

A. Super B. This C. NULL D. True

The correct answer is CD, today made a simple Java test problem results let me messy, with so long Java, always think true is also Java keyword, because in any editing tool inside True,false,null will be color, It turned out today that Java is not a keyword, but a literals literal. True,false,null is not a key word. This is also the former Sun company rules, no reason, since to play Java this game will need to abide by the rules of others!

The following is copied from the Http://docs.oracle.com/javase/tutorial/java/nutsandbolts/_keywords.html Web page, you can refer to!

Java Language Keywords

Here are a list of keywords in the Java programming language. You cannot use any of the following as identifiers in your programs. The keywords and is const goto reserved, even though they is not currently used. true ,, false and null might seem lik e keywords, but they is actually literals; You cannot use them as identifiers in your programs.

abstract	continue	for	new	switch
assert***	default	goto*	package	synchronized
boolean	do	if	private	this
break	double	implements	protected	throw
byte	else	import	public	throws
case	enum****	instanceof	return	transient
catch	extends	int	short	try
char	final	interface	static	void
class	finally	long	strictfp**	volatile
const*	float	native	super	while

*		Not used
**		Added in 1.2
***		Added in 1.4
****		Added in 5.0

Keywords in Java